Our builder has said a few times “You’ll be able to heat your ADU with a candle.” The concept of that is pretty alluring, though perhaps a little far fetched (I’ll be sure to test it out). Either way, insulation has gone in and the space seems like it’s going to be pretty nice.

The first step was 3″ of spray foam insulation in the ceiling. This not only provides about R20 in the ceiling but also sealed all air gaps.

After the spray foam, additional insulation was blown into the ceiling cavities, creating a total of over R35 in the ceiling. You can see the worker on the left blowing in the loose insulation behind the sheer material. Above the worker on the right you can see the sprayed insulation.

Here’s the finished ceiling insulation. Drywall will be next.

The following work day, they came back and installed the wall insulation. They cranked out this step in just a few hours. Small areas and electrical junction boxes were given a shot of spray foam to insulate behind. They also ran a bead of caulking around the sill plate to stop leaky airflow from between the outside and inside.



Getting the siding on was a major visual milestone for us! It’s so wonderful to see the ADU take shape on the outside and discover the little details that help make our space unique.

Here’s the south side going up. Notice the furring strips that the siding is nailed into. This, as detailed in an earlier post, creates a “rain screen” for moisture to run down incase water gets behind the siding.

Cedar shingles on each gable end.

The front is looking so great! Imagine this with our future glass doors letting even more light into the space. We are considering moving the arbor up 4 or 5 inches, as we didn’t foresee the arbor supports (corbels) interfering with the doors swinging all the way open. Currently they can only swing 90 degrees open before hitting the corbel. Chalk that up to “things you don’t considering while looking at the plans”.

Finally, pretty excited to see some child labor happening on site!

Electrical & Plumbing

I have a new understanding and respect for plumbers and electricians, especially the guys working on our small house. It’s a tight fit to get everything running through the walls, avoiding obstacles and maintaining the correct slope. Fingers crossed that when we flip a light switch that the shower doesn’t turn on!

It was also interesting to learn about what’s up to code. For example, wall outlets need to be placed every 12′. We’ve been living in a house built in 1926 and we’re lucky to have maybe two outlets PER ROOM.

Electrical and plumbing under the kitchen window.

IMG_9302.JPGJust some of the wires running for the bathroom. The yellow wire in the upper left runs to a small electric space heater for the bathroom.

IMG_9317.JPGWe had to get a new double power meter on the side of our house and it’s a little ridiculous how big this thing is. Notice the large feeder wire heading into our basement through the hole in the exterior wall.